DOI: 10.1029/2012GB004378
Scopus记录号: 2-s2.0-84881070464
论文题名: Global modeling study of potentially bioavailable iron input from shipboard aerosol sources to the ocean
作者: Ito A
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 1 起始页码: 1
结束页码: 10
语种: 英语
英文关键词: global chemical transport model
; iron solubility
; ship emission
; soluble iron deposition
Scopus关键词: Arid and semi-arid regions
; Chemical transport models
; Combustion sources
; Essential elements
; Iron solubilities
; North Atlantic Ocean
; Ship emissions
; Soluble irons
; Aerosols
; Arid regions
; Carbon dioxide
; Combustion
; Deposition
; Oceanography
; Ships
; Solubility
; Iron
; aerosol
; air-sea interaction
; aquatic organism
; bioavailability
; carbon dioxide
; carbon flux
; combustion
; industrialization
; iron
; marine environment
; marine pollution
; numerical model
; phytoplankton
; pollutant source
; solubilization
; Atlantic Ocean
; Atlantic Ocean (North)
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: Iron (Fe) is an essential element for phytoplankton. The majority of iron is transported from arid and semiarid regions to the open ocean, but it is mainly in an insoluble form. Since most aquatic organisms can take up iron only in the dissolved form, aerosol iron solubility is a key factor that can influence the air-sea CO2 fluxes and thus climate. Field observations have shown relatively high iron solubility in aerosols influenced by combustion sources, but specific emissions sources and their contributions to deposition fluxes largely remain uncertain. Here a global chemical transport model was used to investigate the effect of aerosol emissions from ship plumes on iron solubility in particles from the combustion and dust sources. The model results reveal that the oil combustion from shipping mainly contributes to high iron solubility (>10%) at low iron loading (1-110 ng m-3) observed over the high-latitude North Atlantic Ocean, rather than the other combustion sources from continental industrialized regions. Due to continuing growth in global shipping and no regulations regarding particles emissions over the open ocean, the input of potentially bioavailable iron from ship plumes is likely to increase during the next century. The model results suggest that deposition of soluble iron from ships in 2100 contributes 30-60% of the soluble iron deposition over the high-latitude North Atlantic and North Pacific. ©2012. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77633
Appears in Collections: 气候变化事实与影响
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作者单位: Research Institute for Global Change, JAMSTEC, Yokohama, Kanagawa 236-0001, Japan
Recommended Citation:
Ito A. Global modeling study of potentially bioavailable iron input from shipboard aerosol sources to the ocean[J]. Global Biogeochemical Cycles,2013-01-01,27(1)